261970716 has 24 divisors (see below), whose sum is σ = 698588800. Its totient is φ = 74848752.

The previous prime is 261970711. The next prime is 261970721. The reversal of 261970716 is 617079162.

It is an interprime number because it is at equal distance from previous prime (261970711) and next prime (261970721).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261970711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1559266 + ... + 1559433.

Almost surely, 2^261970716 is an apocalyptic number.

It is an amenable number.

261970716 is an abundant number, since it is smaller than the sum of its proper divisors (436618084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261970716 is a wasteful number, since it uses less digits than its factorization.

261970716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118713 (or 3118711 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 261970716 is about 16185.5094451797. The cubic root of 261970716 is about 639.8589500360.

The spelling of 261970716 in words is "two hundred sixty-one million, nine hundred seventy thousand, seven hundred sixteen".